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Related Concept Videos

Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels. Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this process,...
IR Spectroscopy: Molecular Vibration Overview01:24

IR Spectroscopy: Molecular Vibration Overview

When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
Molecular Orbital Theory I02:35

Molecular Orbital Theory I

Overview of Molecular Orbital Theory
Molecular Orbital Theory II03:51

Molecular Orbital Theory II

Molecular Orbital Energy Diagrams
IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration01:16

IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration

A covalently bonded heteronuclear diatomic molecule can be modeled as two vibrating masses connected by a spring. The vibrational frequency of the bond can be expressed using an equation derived from Hooke's law, which describes how the force applied to stretch or compress a spring is proportional to the displacement of the spring. In this case, the atoms behave like masses, and the bond acts like a spring.
According to Hooke's law, the vibrational frequency is directly proportional to the...

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Updated: Jun 12, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

Spectral hole buming and molecular computing.

U P Wild, A Renn, C De Caro

    Applied Optics
    |June 26, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces molecular computing using spectral hole burning, electric fields, and holography for parallel data processing. It enables direct combination of 2-D data arrays without external processors.

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    Published on: June 28, 2016

    Area of Science:

    • Molecular computing
    • Optical data storage
    • Quantum information science

    Background:

    • Traditional computing faces limitations in speed and energy efficiency.
    • Molecular-level phenomena offer potential for novel computing paradigms.

    Purpose of the Study:

    • To present a new concept for molecular computing.
    • To leverage spectral hole burning, electric fields, and holography for data processing.

    Main Methods:

    • Utilizing spectral hole burning for data encoding.
    • Applying external electric fields to manipulate molecular energy levels.
    • Employing holographic interferometry for data readout and combination.

    Main Results:

    • Demonstration of parallel data combination directly within 2-D arrays.
    • Elimination of the need for external processors in data manipulation.
    • Potential for high-density data storage and rapid processing.

    Conclusions:

    • Molecular computing offers a novel approach to overcome current computational bottlenecks.
    • The presented method allows for direct, parallel processing of holographic data.
    • This technology has implications for future high-performance computing and data storage.